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Finding the Fourth Proportional to 493,707.96, 681,317.46 and 278,848.44

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Solution

The fourth proportional to 493,707.96, 681,317.46 and 278,848.44 is: 384,811.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,707.96 : 681,317.46 = 278,848.44 : x
  2. Step 2: Convert to fraction form
    493,707.96/681,317.46 = 278,848.44/x
  3. Step 3: Cross multiply
    493,707.96x = 681,317.46 × 278,848.44
  4. Step 4: Simplify right side
    493,707.96x = 189,984,310,865.76
  5. Step 5: Solve for x
    x = 189,984,310,865.76/493,707.96
  6. Step 6: Final answer
    x = 384,811.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.